#!/usr/bin/env bash

set -eu
script_name=$0

die() {
    echo >&2 "$@"
    exit 1
}

about() {
    die "usage: ${script_name} [make | load | lock | unlock | clean]"
}

#shellcheck disable=SC1007
THIS_DIR=$(CDPATH= cd -- "$(dirname -- "$0")" && pwd)
cd "${THIS_DIR}"/../../
#shellcheck disable=SC1091
. ./.environment.sh

# you have not removed set -u above, have you?

[[ -z "${TEST_DIR-}" ]] && die "\$TEST_DIR must be defined."
[[ -z "${LOCAL_DIR-}" ]] && die "\$LOCAL_DIR must be defined."
[[ -z "${CSCLI-}" ]] && die "\$CSCLI must be defined."
[[ -z "${LOCAL_INIT_DIR-}" ]] && die "\$LOCAL_INIT_DIR must be defined."
[[ -z "${PLUGIN_DIR-}" ]] && die "\$PLUGIN_DIR must be defined."
[[ -z "${DB_BACKEND-}" ]] && die "\$DB_BACKEND must be defined."

if [[ ! -f "${CSCLI}" ]]; then
    die "${CSCLI} is missing. Please build (with 'make bats-build') or install it."
fi

REL_CONFIG_DIR="etc/crowdsec"
REL_DATA_DIR="var/lib/crowdsec/data"

DATA_DIR="${LOCAL_DIR}/${REL_DATA_DIR}"
export DATA_DIR
CONFIG_DIR="${LOCAL_DIR}/${REL_CONFIG_DIR}"
export CONFIG_DIR
HUB_DIR="${CONFIG_DIR}/hub"
export HUB_DIR

if [[ $(uname) == "OpenBSD" ]]; then
    TAR=gtar
else
    TAR=tar
fi

remove_init_data() {
    ./bin/assert-crowdsec-not-running || die "Cannot remove fixture data."
    rm -rf -- "${LOCAL_DIR:?}/${REL_CONFIG_DIR}"/* "${LOCAL_DIR:?}/${REL_DATA_DIR:?}"/*
}

config_generate() {
    mkdir -p "${CONFIG_DIR}"

    cp ../config/profiles.yaml \
       ../config/simulation.yaml \
       ../config/online_api_credentials.yaml \
       "${CONFIG_DIR}/"

    cp ../config/detect.yaml \
       "${HUB_DIR}"

    # the default acquis file contains files that are not readable by everyone
    touch "$LOG_DIR/empty.log"
    cat <<-EOT >"$CONFIG_DIR/acquis.yaml"
	source: file
	filenames:
	    - $LOG_DIR/empty.log
	labels:
	    type: syslog
	EOT

    cp ../cmd/notification-*/*.yaml \
       "${CONFIG_DIR}/notifications/"

    yq e '
    .common.daemonize=true |
    del(.common.pid_dir) |
    .common.log_level="info" |
    .common.log_dir=strenv(LOG_DIR) |
    .config_paths.config_dir=strenv(CONFIG_DIR) |
    .config_paths.data_dir=strenv(DATA_DIR) |
    .config_paths.simulation_path=strenv(CONFIG_DIR)+"/simulation.yaml" |
    .config_paths.hub_dir=strenv(HUB_DIR) |
    .config_paths.index_path=strenv(HUB_DIR)+"/.index.json" |
    .config_paths.notification_dir=strenv(CONFIG_DIR)+"/notifications" |
    .config_paths.plugin_dir=strenv(PLUGIN_DIR) |
    .crowdsec_service.acquisition_path=strenv(CONFIG_DIR)+"/acquis.yaml" |
    .crowdsec_service.acquisition_dir=strenv(CONFIG_DIR)+"/acquis.d" |
    .db_config.db_path=strenv(DATA_DIR)+"/crowdsec.db" |
    .db_config.use_wal=true |
    .api.client.credentials_path=strenv(CONFIG_DIR)+"/local_api_credentials.yaml" |
    .api.server.listen_socket=strenv(DATA_DIR)+"/crowdsec.sock" |
    .api.server.profiles_path=strenv(CONFIG_DIR)+"/profiles.yaml" |
    .api.server.console_path=strenv(CONFIG_DIR)+"/console.yaml" |
    del(.api.server.online_client)
    ' ../config/config.yaml >"${CONFIG_DIR}/config.yaml"
}

make_init_data() {
    ./bin/assert-crowdsec-not-running || die "Cannot create fixture data."

    remove_init_data
    mkdir -p "${DATA_DIR}"
    mkdir -p "${CONFIG_DIR}/notifications"
    mkdir -p "${CONFIG_DIR}/hub"
    mkdir -p "${CONFIG_DIR}/patterns"
    cp -a "../config/patterns" "${CONFIG_DIR}/"
    config_generate
    # XXX errors from instance-db should be reported...
    ./instance-db config-yaml
    ./instance-db setup

    "$CSCLI" --warning hub update --with-content

    # preload some content and data files
    "$CSCLI" collections install crowdsecurity/linux --download-only
    # sub-items did not respect --download-only
    ./bin/remove-all-hub-items

    # force TCP, the default would be unix socket
    "$CSCLI" --warning machines add githubciXXXXXXXXXXXXXXXXXXXXXXXX --url http://127.0.0.1:8080 --auto --force

    mkdir -p "$LOCAL_INIT_DIR"

    ./instance-db dump "${LOCAL_INIT_DIR}/database"

    echo "${DB_BACKEND}" > "${LOCAL_INIT_DIR}/.backend"

    "${TAR}" -C "${LOCAL_DIR}" --create \
        --exclude "${REL_DATA_DIR}"/crowdsec.db \
        --file "${LOCAL_INIT_DIR}/init-config-data.tar" "${REL_CONFIG_DIR}" "${REL_DATA_DIR}"

    remove_init_data
}

lock_init_data() {
    touch "${LOCAL_INIT_DIR}/.lock"
}

unlock_init_data() {
    rm -f "${LOCAL_INIT_DIR}/.lock"
}

load_init_data() {
    [[ -f "${LOCAL_INIT_DIR}/.lock" ]] && die "init data is locked"
    ./bin/assert-crowdsec-not-running || die "Cannot load fixture data."

    if [[ ! -f "${LOCAL_INIT_DIR}/init-config-data.tar" ]]; then
        die "Initial data not found; did you run 'make bats-fixture' ?"
    fi

    dump_backend="$(cat "${LOCAL_INIT_DIR}/.backend")"
    if [[ "${DB_BACKEND}" != "${dump_backend}" ]]; then
        die "Can't run with backend '${DB_BACKEND}' because the test data was built with '${dump_backend}'"
    fi

    remove_init_data

    "${TAR}" -C "${LOCAL_DIR}" --extract --file "${LOCAL_INIT_DIR}/init-config-data.tar"

    ./instance-db restore "${LOCAL_INIT_DIR}/database"
}

# ---------------------------

[[ $# -lt 1 ]] && about

case "$1" in
    make)
        make_init_data
        ;;
    load)
        load_init_data
        ;;
    lock)
        lock_init_data
        ;;
    unlock)
        unlock_init_data
        ;;
    clean)
        remove_init_data
        ;;
    *)
        about
        ;;
esac;

